Edward f



No- 750,107. PATENTED JAN. 19, 1904. E F GIBBONS CUTTING MACHINE. APPLICATION FILED JULY 21, 1903.

N0 MODEL.

WITNESSES:

UNITED STATES f Patented January 19, 1904.

PATENT OFFICE.

EDWARD F. GIBBONS, OF SALEM, OHIO, ASSIGNORTO THE SILVER MANU- FACTURING COMPANY, OF SALEM, OHIO, A CORPORATION.

CUTTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 750,107, dated January 19, 1904.

Application filed July 21, 1903. Serial No. 166,463. (N0 model.) i

To (1. whom it mayconcern:

Be it known that I, EDWARD F, GIBBONS, a citizen of the United States, residing at Salem, county of Columbiana, State of Ohio, have invented certain new and useful Improvements in Cutting-Machines, of which the following is a specification.

My invention relates in general to cuttingmachines, and more specifically consists of an attachment designed to be applied to feed-cutting machines.

The preferred form of my invention is illustrated in the accompanying sheet of drawings, in which i Figure 1 is a perspective view of an approved form of feed-cutting machine, parts being'broken away to show my invention applied thereto. Fig. 2 is a vertical section taken through the cutter-bar and showing a fragment of the lower feed-roll and my invention attached thereto, and Fig. 3 is a perspective View of the cutter-bar with my inventionattached thereto.

Throughout the drawings like reference-figures indicate like parts.

1 represents the cutting-machine generally and its supporting-frame. This has a set of revolving knives 2, mounted on a shaft 3, which has the usual fly-wheel 4:. The revolving knives cooperate with a stationary cutterbar 5, which has a shearing edge 6, against which the revolving knives operate, as indicated by the dotted arc in Fig. 2.

In order to feed the material to the knives, one or more feed-rollers are used. I have shown a lower feed-roller 7 and an upper feedroller 8, the latter being provided with projections or corrugations, which, however, are not essential in any way to the operation of my invention.

The novel feature constituting my invention consists of the spring-plate 9, which acts as a guard or bridge to prevent material being carried down between the feed-roller 7 and the back of' the cutter-bar 5. As shown, this spring-plate 9 has its lower half portion 9 adapted to fit snugly against the back of the cutter-bar, being held in position by rivets 10 The upper half poror other suitable means.

tion 9 of the plate 9 is bent slightly or otherwise offset from the cutter-bar 5, so as to-clear it from the same and allow a certain amount of play to said upper half portion of the springplate. The extreme upper portion 9" of the plate 9 is bent outwardly and horizontally, as shown, in a plane approximately at right angles to that of the lower half 9 of said plate, so that its extreme upper or outer edge bears against the face of the lower feed-roller 7 with a regulated amount of spring-pressure.

The operation of my invention will be apparent from the foregoing description. When the fly-wheel 4 is rotated and the material is .fed up to the feed-rollers, the same will grasp the material and force it forward over the cutter-bar 5, where as it advances it will be caught by the downward movement of the revolving knives 2, shearing against the edge 6 of the cutter-bar.

The foregoing is the usual mode of operation of a machine of this type; but in the absence of my invention there is a tendency for a certain portion of the material 'to be carried down by the lower feed-roller 7 and escape the action of the knives by passing between the feed-roller and the stationary cutter-bar 5 or becoming packed between the same, and thereby clogging the action of the machine. My guard-plate 9, pressing closely against the face of the roller 7 with a light spring-pressure and bridging over the space betweenthe roller and the cutter-bar, as clearly shown in Fig. 2, preventsthe above-described action of the material, clears the surface of feedroller 7, and compels all the material fed to the machine to be delivered to the cutters.

It is evident of course that various changes could be made in the details of the apparatus, described and shown in the drawings without departing from the true spirit and scope of my invention. Other forms of springplate might be used, so long as they efiiciently bridge over the space between the cutter-bar and the roller, and a spring-plate of the nature described might be employed in similar relation to other forms of cutter-bar and to machines having somewhat-different relative location of the knives and feed-roll- 1 5 roll ers. Such resulting modifications, however, would not involve other than mechanical skill and would leave the various constructions so produced still within the boundaries of my invention.

Having thus described my invention, I claim 1. In combination with a cuttingmachine having a stationary cutter-bar and a revolving feed-roller, a spring guard-plate fastened to the cutter -bar near the lower edge of said plate, and having its upper portion bent outwardly and horizontally and its upper edge spring-pressed upon the surface of the feed- 2. In a cutting-machine the combination of a stationary cutter-bar, a revolvlng feed-roller and a sprlng guard-plate clamped at its lower the presence of two witnesses.

EDWARD F. GIBBONS. Witnesses:

S. V. RAMsEY', T. E. WEBB. 

